Modest biography of this mathematician and scientist who published a treatise about the new colony of Virginia is offered here.

English scientist observed the satellites of Jupiter and sunspots, researched optics, discovered the sine law, and studied ballistic motion.

Minor renaissance scientist and explorer left manuscripts about optics, refraction, telescopes, and algebra behind after his death.

Overviews the lives of these two men who basically invented and contributed our current system of symbols to modern algebra.